In a Sample of 30 Participants,a Researcher Estimates the 95

Multiple Choice

In a sample of 30 participants,a researcher estimates the 95% CI for a sample with a mean of M₁ - M₂ = 0.7 and an estimated standard error for the difference (S_{M1 - M2}) of 0.2.What is the confidence interval at this level of confidence?

A) 95% CI 0.4, 1.0
B) 95% CI 0.5, 0.9
C) 95% CI 0.3, 1.1
D) There is not enough information to answer this question.